<template>
  <el-container class="home_container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside :width="isCollapse ? '64px': '200px'">
        <div class="toggle_button" @click="toggleCollape">|||</div>
        <el-menu  background-color="#333744" text-color="#fff" active-text-color="#409EFE" unique-opened :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单 -->
        <template slot="title">
          <i :class="iconsobj[item.id]"></i>
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
          <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+ subItem.path)">
            <template slot="title">
          <i class="el-icon-menu"></i>
          <span>{{subItem.authName}}</span>
        </template>
          </el-menu-item>
      </el-submenu>
    </el-menu>
      </el-aside>
      <!-- 主体区域 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>

</template>

<script>
export default {
  data () {
    return {
      menulist: [],
      iconsobj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 退出
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    },
    // 折叠菜单栏
    toggleCollape () {
      this.isCollapse = !this.isCollapse
    },
    // 保存连接激活状态
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style lang="less" scoped>
.home_container{
  height: 100%;
}
.el-header{
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  font-size: 20px;
  color: #fff;
  background-color: #373d41;
  > div{
    display: flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
  }
}
.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main{
  background-color: #EAEDF1;
}
.iconfont {
  margin-right: 10px;
}
.toggle_button {
  font-size: 10px;
  line-height: 24px;
  text-align: center;
  background-color: #4A5064;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
